JP2002143050A - Suction port body and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body provided with two rotary cleaning bodies and capable of improving dust removing performance. SOLUTION: This suction port body 8 stores two front and rear rotary cleaning bodies 23 and 24 stored in a cleaning body storing chamber having a dust removing port facing to a surface to be cleaned. A dust transfer chamber communicated with an upper side of the storing chamber via a communication port 61 is provided and both of the storing chamber and the dust transfer chamber are partitioned by a dust receiving shelf 62. A joint pipe 21 for sucking air current flowing along the longitudinal direction of the dust transfer chamber is communicated with the longitudinal direction center part of the chamber, dust scraped up to the dust transfer chamber by the cleaning bodies 23 and 24 is transferred by air current and is sucked by the joint pipe 21. A backward cutout groove 63 is formed in the dust receiving shelf 62 and a wide port part 61a widened to a part of the communication port 61 is provided. The suction port body 8 is characterized by sucking comparatively large dust such as waste paper into the joint pipe 21 from the part 61a via the dust transfer chamber, suppressing lowering of velocity of air flowing to the dust transfer chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air circulation for returning air discharged from an electric blower in a cleaner body to a suction port body and for cleaning while circulating the air between the suction port body and the cleaner body. The present invention relates to a non-air circulation type vacuum cleaner that performs cleaning while applying a suction force to a surface to be cleaned without involving such air circulation, and also relates to a suction port body used in these vacuum cleaners.

[0002]

2. Description of the Related Art In a suction port body of a non-air circulation type vacuum cleaner, two rotating brushes having different rotation directions and rotation speeds are arranged in parallel to a floor surface, and both brushes are connected to the suction port body. By wrapping each other in the front-rear direction, a suction port body capable of effectively excavating and knocking out dust on the floor surface to improve dust collection performance and miniaturizing has been proposed (Japanese Patent Application Laid-Open No. HEI 9-260,009). No. 5-111449).

[0003] In this suction port, dust on the floor surface is scraped up so as to pass between the two rotating brushes as the two rotating brushes rotate, and the dust is provided at the center in the width direction of the suction port. It can be sucked into the connecting pipe connected to the cleaner body. However, as described above, no particular measures have been taken to determine how effectively the scraped-up dust is sucked into the connecting pipe, and it depends only on the suction force exerted from the connecting pipe. It is just doing.

[0004] Therefore, dust sucked up at the center in the width direction of the suction port body to which the connection pipe is attached is effectively sucked, but the width of the suction port body separated from the connection pipe is reduced. It is difficult to easily suck the dust scooped up by the two rotating brushes at both ends in the direction into the connecting pipe.

More specifically, a flow path from the end in the width direction of the suction opening body to the connecting pipe is formed in an upper portion of a brush accommodating chamber accommodating the rotating brush. Specifically, since the flow path is formed between the upper peripheral surface of the rotating brush and the flat upper wall of the suction opening provided to cover the upper surface of the rotary brush, the flow path directly faces the flow path. The rotating brush has a large flow path resistance. Therefore, dust scooped up by the two brushes at the end in the width direction of the suction opening body is likely to be caught on the rotating brush when moving in the direction of the connecting pipe. In addition, the suction force that spreads to the end portion separated from the connecting pipe is weak. Therefore, the performance of sucking the dust into the connecting pipe is low.

As described above, at the widthwise end of the suction opening body, even if the dust on the floor surface is scraped up by the two rotating brushes, the dust falls freely and is splashed around the rotating brush. So it is hard to be sucked into the connecting pipe. Therefore, the dust removal performance of the conventional suction opening body is low.

[0007] In particular, when the suction force that spreads to the connecting pipe is reduced, the above-mentioned dust removal performance is significantly reduced. or,
The suction port body of the air circulation type vacuum cleaner does not actively suck air from the floor surface (the surface to be cleaned), and the suction force spreading to the widthwise end portion of the suction port body is not originally expected. Therefore, even if the technique of the above publication is simply applied to the suction port of the air circulation type vacuum cleaner, the dust removal performance cannot be improved for the same reason as the non-air circulation type suction port.

[0008]

The problem to be solved by the present invention resides in one provided with two rotating cleaning bodies,
An object of the present invention is to provide a suction port body and a vacuum cleaner capable of improving dust removal performance.

[0009]

SUMMARY OF THE INVENTION The present invention is based on the premise that a suction port is provided in which two rotary cleaning elements are housed side by side in a cleaning element housing chamber having a dust removal opening facing a surface to be cleaned.

[0010] In order to solve the above-mentioned problem, the invention according to claim 1 is to provide a dust transfer chamber communicating with the cleaning body accommodating chamber through a communication port thereabove in the same direction as the direction in which the cleaning body accommodating chamber extends. And provided above the cleaning body housing chamber,
A dust receiving shelf is provided between the dust transfer chamber and the cleaning body accommodating chamber, and a joint pipe for sucking an airflow flowing in the dust transfer chamber in the longitudinal direction is provided at a position away from the air introduction port. The communication port is provided so as to communicate with the dust transfer chamber, and a part of the communication port is formed wider than other parts.

The invention of claim 1 is applicable to an air circulation type or non-air circulation type suction port for a vacuum cleaner. or,
In the invention of claim 1 and each of the following inventions, the two rotary cleaning members are arranged so that their rotational trajectories are in contact or overlap with each other, or are close to each other such that their rotational trajectories are not in contact with each other. May be arranged.

Further, in the invention of claim 1 and each of the following inventions, the rotary cleaning member has a bristle as a cleaning element planted on the entire peripheral surface of the cleaning member shaft so as to project radially from the cleaning member shaft. In addition to the above, a rotary cleaning body can be used, and a brush made of a soft synthetic resin or brushed cloth blade as a cleaning element or a brush bristle formed in a series of blades around the cleaning body shaft. A rotary cleaning member having a blade-like blade mounted so as to protrude radially from the cleaning body axis may be used. Each of the blades may be mounted so as to extend parallel to the cleaning body axis, or It may be attached so as to spirally wind around the shaft. In addition, a rotary cleaning body in which at least one of the blades of each type is mounted in a plurality of rows can be used, and the blades provided in the front and rear rotary cleaning bodies may be of different types or may be of the same type. Alternatively, for at least one of the rotary cleaning members, a rotary cleaning member in which different types of blades are alternately provided may be used.

[0013] In the first and the following inventions, the joint pipe communicating with the dust transfer chamber may be provided at any position in the width direction of the suction port body. When it is provided at both ends in the width direction, it is preferable to provide the suction port body at the center in the width direction. Further, in the invention of claim 1, it is preferable that the dust transfer chamber is provided so as to straddle the two rotary cleaning bodies, and the cross-sectional area of the flow path of the dust transfer chamber is equal to the cross-sectional area of the flow path of the cleaning body accommodating chamber. It can be the same, smaller, or larger. In the first aspect of the present invention, the dust receiving shelf may be a mere flat plate, and the dust receiving shelf is at least on the side where the joint pipe is located with respect to the communication port between the dust transfer chamber and the cleaning body housing chamber. It is preferable to provide it close to.

In the first aspect of the present invention, the air flowing into the dust transfer chamber may be air (outside air) sucked from outside the main portion of the suction port body, or an air circulation type vacuum cleaner. In this case, the air may be air discharged from the electric blower and circulated. When the outside air is sucked, it can be sucked from below, above, or from the side of the suction port main body.

According to the first aspect of the present invention, a flow of air toward the joint pipe is formed in the cleaning body accommodating chamber and the dust transfer chamber at a position above the accommodating chamber as air is sucked into the joint pipe. You. Therefore, of the dust that is scraped up from the surface to be cleaned by the two rotating cleaning bodies and reaches the dust transfer chamber through the communication port, the one that falls freely is placed on the dust receiving shelf by the airflow to the joint pipe. It can be moved and put on this shelf to prevent free fall on the rotary cleaning body. Then, as described above, since air flows into the dust transfer chamber toward the joint pipe, the air flow transfers dust on the dust receiving shelf and dust floating in the dust transfer chamber to the joint pipe. Can be sucked. In this case, in combination with the fact that the dust transfer chamber is above the cleaning body accommodating chamber and the dust receiving shelf is located between these two chambers, the air flowing through the dust transfer chamber and the rotary cleaning body hardly interfere with each other. do not do. Therefore, the dust swept up from the surface to be cleaned into the dust transfer chamber by the two rotary cleaning bodies can be smoothly transferred to the joint pipe by the airflow and sucked.

In the suction port according to the first aspect of the present invention, it is preferable that the flow rate of the air flowing through the dust transfer chamber is high. Therefore, the width of the communication port is preferably reduced. Since the dust swept up by the two rotary cleaning bodies passes through the width, if the widths of the communication ports are all reduced to the same value, relatively large dust cannot be sucked. But,
According to the first aspect of the invention, the width of each part of the communication port is not the same, but is non-uniform, and the width of a part thereof is widened. For this reason, relatively large dust such as paper dust scraped up by the two rotary cleaning members can be sucked into the joint pipe through the dust transfer chamber in the wide mouth portion.

Further, the invention according to claim 2 is characterized in that a wide mouth portion in which the width of the communication port is widened is provided on an extension of the joint pipe and in front thereof.

According to the second aspect of the present invention, a wide mouth portion of the communication port is provided near the front of the joint pipe for sucking air in the dust transfer chamber and the cleaning body housing chamber communicating with each other through the communication port. Is located, the joint pipe can easily suck in the air in the wide mouth portion.

According to a third aspect of the present invention, the dust receiving shelf is provided with a notch groove facing the wide mouth portion where the width of the communication port is widened toward the rear side of the main portion of the suction port body. It is characterized by.

According to the third aspect of the present invention, since the wide mouth portion of the communication port is brought closer to the joint pipe, the air in the wide mouth portion can be easily sucked by the joint pipe.

According to a fourth aspect of the present invention, the width of the wide mouth portion along the width direction of the main portion of the suction port body, which is increased in width, is opposed to each other across the axis of the inlet portion of the joint pipe. It is characterized in that it is smaller than the minimum dimension between the inner surfaces.

In the fourth aspect of the present invention, the size of the dust that can pass through the wide mouth portion is substantially limited by the width of this portion, and the size of this width is determined with respect to the axis of the inlet portion of the joint pipe. Since the diameter is smaller than the minimum dimension between the opposing inner surfaces, it is possible to prevent dust larger than the minimum dimension, which may be clogged at the entrance, from passing through the wide mouth and reaching the entrance of the joint pipe.

According to a fifth aspect of the present invention, by the operation of the electric blower in the main body of the cleaner, the dust on the surface to be cleaned is sucked together with air from the dust collecting opening of the suction opening body connected to the dust collecting chamber of the main body of the cleaner. In a vacuum cleaner that captures the sucked dust through a filter in the dust collection chamber, the suction port body according to any one of claims 1 to 4 is used for the suction port body. It is characterized by.

According to the fifth aspect of the invention, there is almost no interference between the rotary cleaning body and dust that has been scraped up from the surface to be cleaned by the two front and rear rotary cleaning bodies and passed through the communication port to the dust transfer chamber. The dust picked up by the dust transfer chamber can be smoothly transferred to the joint pipe by the airflow flowing through the dust transfer chamber and sucked while being received by the dust receiving shelf provided between the two chambers. Since the dust is easily removed even at the widthwise end of the main portion, and a suction port body that can suck relatively large dust such as paper dust into the joint pipe through the wide opening portion of the communication port is provided. A non-air circulation type vacuum cleaner having improved performance can be provided.

According to a sixth aspect of the present invention, the dust on the surface to be cleaned is taken in from the dust collecting opening of the suction opening body connected to the dust collecting chamber of the cleaner body having the electric blower built therein. The air exhausted from the electric blower after passing through the filter and captured by the filter in the dust collection chamber is returned to the suction port body, and the discharged air is circulated between the cleaner body and the suction port body. In a vacuum cleaner which performs cleaning while performing, the suction port body according to any one of claims 1 to 4 is used for the suction port body.

According to the sixth aspect of the present invention, there is almost no interference between the rotary cleaning body and the dust swept up from the surface to be cleaned by the two front and rear rotary cleaning bodies and passing through the communication port to the dust transfer chamber. The dust picked up by the dust transfer chamber can be smoothly transferred to the joint pipe by the airflow flowing through the dust transfer chamber and sucked while being received by the dust receiving shelf provided between the two chambers. Dust is easily removed even at the end of the main portion in the width direction, and a suction port body that can suck relatively large dust such as paper waste into the dust coupling pipe through the wide opening portion of the communication port is provided. It is possible to provide an air circulation type vacuum cleaner having improved picking performance.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing an entire air circulation type vacuum cleaner A, in which reference numeral 1 designates a pair of wheels 2 (only one is shown) and a turning wheel (not shown) to freely move on the surface to be cleaned. It is a cleaner body that can be moved. The cleaner body 1 has a flexible dust suction hose 4 in a dust suction port 3 provided in a front portion thereof.
One end of a communication pipe 6 for dust suction having an inflexible dust suction pipe 5, that is, a connecting cylinder 7 provided on the dust suction hose 4 is detachably fitted and connected, and the other end of the communication pipe 6, that is, dust suction The pipe 5 is connected to a suction port 8 described later. Air discharged from an electric blower described later is guided to the dust suction port 3 so as not to mix with the dust suction air.

At the front part of the cleaner main body 1 formed by combining a plurality of synthetic resin case members, a dust collection chamber having an upper opening is formed, and at the rear part, a blower chamber is formed. I have. A dust collecting bag 9 as a filter is housed in the dust collecting chamber so as to be able to be taken in and out through an upper opening thereof, and the upper opening of the dust collecting chamber is airtightly closed by a case lid 10 which can be opened and closed. An electric blower 11 and a cord reel (not shown) are accommodated in a blower room in which the wheels 2 are rotatably mounted on both sides. Electric blower 1
The air (exhaust) discharged from 1 is configured to be guided to the dust suction port 3 via a return air path member (not shown) arranged so as to bypass one side of the dust collection chamber. In addition, 1 in FIG.
Reference numeral 3 denotes an insertion plug connected to the end of a power cord wound around a cord reel.

The dust suction hose 4 is, for example, a double pipe having a coaxial structure, and an air passage formed in an inner space of the bellows-like inner pipe has an air through which dust taken in by a suction port 8 described later circulates. The exhaust gas guided from the return air passage member is passed through the dust inlet 3 through an annular air passage formed between the inner pipe and the bellows-shaped outer pipe. A connection tube 16 having a handle 15 formed in a rectangular shape and protruding upward is provided at the tip of the dust suction hose 4. The handle 15 is used to start and operate various operations for the electric blower 11 and the like. A hand-operated control switch 17 for instructing stop is provided.

Each of the two-piece dust-absorbing pipes 5 detachably connected to the connecting cylinder 16 is a hard pipe made of synthetic resin, and has a first pipe 5a for sucking dust and an exhaust port 8 for sucking exhaust gas. And a second pipe 5b for returning to the second state. The first pipe 5 a is connected to the inner pipe of the
Similarly, the second pipe 5b is connected to the annular ventilation path between the inner and outer pipes of the dust suction hose 4 via the connection tube 16.

Next, with reference to FIGS.
A description will be given of the suction port 8 connected to the front end of the suction port. The suction port body 8 includes a joint pipe 21 made of a synthetic resin as a connecting part that communicates with the cleaner body 1 side, a suction port main body 22 made of a synthetic resin, and two rotary cleaning bodies 23 and 24 in front and behind.
And a cleaning element driving device 25.

The dust suction port 3 of the cleaner body 1 is detachably fitted and attached to the tip of the dust suction pipe 5.
3, 6, and 7, the joint pipe 21 has a fixed portion 31 to the suction port main body 22 and a movable portion 32 rotatably connected to the fixed portion 31. It has.

The fixed portion 31 includes a fixed base tube 33 and a rotating tube 34 rotatable around the axis of the base tube 33. The fixing portion 31 is configured such that the front end portion of the fixing base tube 33 is inserted into the inlet main body portion 22 in a posture in which its axis is aligned with the front-rear direction.
The main body 2 is sandwiched between the main body lower case and the main body upper case, which will be described later, from the top and bottom, and
2 is fixed to the center in the width direction.

The fixed base tube 33 has an inner tube portion 33a formed of a cylindrical tube having both front and rear ends opened, an outer tube portion 33b having a rear end opened, and a front end of the outer tube portion 33b closed. It has a front wall 33c integrally connecting the pipe portions 33a and 33b. The inner tube 33a is longer than the outer tube 33b. The front end of the inner pipe portion 33a projects forward through the front wall 33c, and forms an inlet for suction. The inner pipe part 33a forms a part of a suction air path, and a passage 35 forming a part of a return air path is formed between the inner and outer pipe parts 33a and 33b. One or more ventilation holes 36 (see FIG. 7) are opened in the front wall 33c.

The front part of the rotating pipe 34 has a double pipe structure. The front portion is rotatably fitted to the outer circumferences of the inner and outer pipe portions 33a and 33b along these peripheral surfaces, and the rotary tube 34 is attached to the fixed portion 31 from the rear side. Rotating tube 3
Reference numeral 4 has a concave groove 37 at its rear portion which opens from the rear surface to the upper surface. A passage 38 (see FIG. 7) forming a part of the return air passage is formed in the rotating pipe 34 so as to communicate with the passage 35.

As shown in FIGS. 3 and 7, the movable portion 32
It has a first pipe 41 that communicates with the inner pipe portion 33a for sucking dust, and a second pipe 42 that communicates with the passage 38 for returning exhaust gas into the suction port main body 22. The first pipe 41 is detachably fitted to and connected to the first pipe 5a of the dust suction pipe 5, and the connecting portion 42a at the rear end of the second pipe 42 is connected to the second pipe 5b of the dust suction pipe 5.
Are detachably fitted and connected.

The front end of the movable portion 32 is housed in a concave groove 37 and connected to the rear portion of the rotary tube 34. As shown in FIG. 7, this connection is such that a connection cylinder portion 43 integrally projecting from both sides of the second pipe 42 in opposite directions to each other is rotatable into a mounting hole 39 opened in a rear portion of the rotation pipe 34. It is performed by fitting. By this connection, the second pipe 42 and the passage 38 communicate with each other via the connecting cylinder 43, and the movable part 32 is provided with the concave portion over a range of approximately 90 ° around the mounting hole 39 and the connecting cylinder 43. It is mounted so as to be movable along the groove 37.

In FIG. 2, reference numeral 45 denotes one of a pair of terminal pins for supplying electric power to the cleaning element driving device 25, and these pins 45 are connected to the dust suction pipe 5 by the joint pipe 2.
1 is connected to a terminal contact piece (not shown) provided at the tip of the dust suction pipe 5. Thereby, the electric wiring 46 (FIG. 3) from the terminal pin 45 to the cleaning body driving device 25 is formed.
), And the cleaner driving device 25 by the control switch 17 via an electric wiring (not shown) in the dust suction pipe 5.
Is cut off.

As shown in FIGS. 3 and 4, the suction port main part 22 has a main part upper case 51, a main part lower case 52, and a main part middle case 53 sandwiched therebetween. The main case upper and lower cases 51 and 52 are connected by screws. The main part upper case 51 has a plurality of ribs on its back surface, and is attached to the main part lower case 52 with the ribs pressing down the main part middle case 53 from above. A plurality of traveling rollers 54 (see FIG. 8) are attached to the bottom wall of the main lower case 52. Inside the suction port main body 22, a circulating air blowing chamber 56 and a cleaning body accommodating chamber 5 are provided.
7 and a dust transfer chamber 58 are provided.

The circulating air blowing chamber 56 is provided with a main part upper and lower case 5.
It is formed by the internal space of the suction port main part 22 partitioned by 1, 52 and the main part middle case 53, and its front part is provided so as to cover the upper side of the dust transfer chamber 58.

In the cleaning body storage chamber 57, the two rotary cleaning bodies 23 and 24 are housed side by side in parallel with each other. The cleaning body accommodating chamber 57 has a dust removal opening 57a that opens to the bottom wall of the main lower case 52 and faces a surface to be cleaned such as a floor.
The cleaning body accommodating chamber 57 is formed in such a size as to be substantially filled by the two rotary cleaning bodies 23 and 24 accommodated therein. Therefore, the inner surfaces of the storage chamber 57 are provided with the rotation trajectories R1, R of the two rotating cleaning bodies 23, 24 arranged side by side.
2 (see the dashed line in FIG. 4) so as to approach each other without forming a relatively large gap.
24 is provided so as to cover the front and rear and from above.

3 to 5, reference numeral 59 denotes a lower case 5 of the main part.
One or more suction holes provided obliquely penetrating through the front wall of No. 2, and the rear end thereof is opened to the cleaning body accommodating chamber 57. The suction hole 59 is provided for sucking dust at the corner of the wall when the front edge of the suction opening 8 is pressed against the wall.

The middle part 53 of the main part is mounted on the upper surface of the front part of the lower part 52 of the main part so as to cover the ribs 52a to 52d which are substantially rectangular and are continuous with each other from above.
Together with these ribs 52a to 52d, a dust transfer chamber 58 is defined. The storage chamber 57 is located above the cleaning body storage chamber 57.
The dust transfer chamber 58 having substantially the same length as that of the cleaning body housing chamber 57 extends in the same direction as the direction in which the cleaning body housing chamber 57 extends, that is, extends in the width direction of the suction opening body 8 similarly to the cleaning body housing chamber 57. And is communicated with the cleaning body housing chamber 57 through the communication port 61. The cross-sectional area of the flow path of the dust transfer chamber 58 that appears when the suction opening 8 is cross-sectioned in the front-rear direction is smaller than the cross-sectional area of the flow path of the similar cleaning body housing chamber 57. Thereby, the flow velocity of the air flowing through the dust transfer chamber 58 along the width direction of the suction opening 8 is also higher than the flow velocity of the air flowing through the cleaning body housing chamber 57 along the width direction of the suction opening 8. Is set to

The communication port 61 is also provided to extend in the width direction of the suction port 8 at substantially the same length as the cleaning element housing chamber 57. The communication port 61 partially partitions the space between the cleaning body accommodating chamber 57 and the dust transfer chamber 58, and is provided with a dust receiving shelf 62 provided as a rear bottom wall of the dust transfer chamber 58. Has been squeezed. The communication port 61 faces right above the pair of rotary cleaning members 23 and 24 so as to straddle the pair of rotary cleaning members 23 and 24. Therefore, the communication port 61 faces the overlapping portion of the rotary cleaning members 23 and 24. The opposing wall portion of the main middle case 53 facing above the communication port 61 forms a guide wall 53a that is inclined so as to cover the communication port 61 as going upward. Therefore, the guide wall 53a is closer to the dust receiving shelf 62 as going upward.

The dust receiving shelf 62 is provided so as to cover the rotary cleaning body 24 on the rear side from above. This shelf 62 is used for the joint pipe 21.
Is inclined so as to gradually decrease as it approaches the inner tube portion 33a. Therefore, in the present embodiment, it is inclined in an inverted C-shape. This makes it easier to suck dust-containing air into the inner tube portion 33a.

The front edge 62a on the front side of the dust tray 62 is raised upward. The height of the upper end of the tip edge 62a is higher than the base of the dust receiving shelf 62, and accordingly, the upper surface of the dust receiving shelf 62 has a concave groove shape (gutter shape).

The portion of the main part middle case 53 facing the fixed base pipe 33 in the joint pipe 21, in this embodiment, the central part of the main part middle case 53 in the longitudinal direction has a widened part 53 b extending upward and backward. are doing. The rear edge of the expanding portion 53b is covered by the front edge of the inner tube portion 33a of the fixed base tube 33. Therefore, the inner pipe portion 33a for suction and the dust transfer chamber 58 are communicated with each other via the expanding portion 53b, and the inner pipe portion 33a for suction and the cleaning body are connected via the dust transfer chamber 58 and the communication port 61. The middle part in the longitudinal direction of the storage chamber 57 is communicated.

As shown in FIG. 3, FIG. 7, and FIG. 8, a portion of the dust receiving shelf 62 near the leading edge 62a is cut out toward the rear side of the suction port main body 22. The notch groove 63 is provided so as to oppose a part of the length of the dust receiving shelf 62 in the longitudinal direction, preferably as an extension of the inner pipe part 33a forming the inlet part of the suction of the joint pipe 21, and to the front. And faces, for example, the center in the longitudinal direction of the communication port 61. As a result, the shape of the communication port 61 extending in the longitudinal direction of the suction port main part 22 is not uniform in width but in each part. That is, in the present embodiment, the communication port 61
Has a configuration in which a central portion in the longitudinal direction is formed wide on the rear side so as to partially approach the joint pipe 21 side. This widened portion is referred to as a wide mouth portion 61a. In FIG. 7 and FIG. 8, the wide-mouthed portion 61a is drawn with two-dot chained parallel diagonal lines to facilitate distinction from other portions.

The width B (see FIGS. 7 and 8) of the wide mouth portion 61a is the minimum dimension D (the distance between the inner surfaces facing the center axis C of the inner tube portion 33a shown in FIGS. 3 and 7). In the embodiment, for example, since the hollow portion of the inner tube portion 33a is circular, it is smaller than the inner diameter of the inner tube portion 33a.). Similarly, the depth dimension E (see FIGS. 7 and 8) of the wide mouth portion 61a in the front-rear direction is also the minimum dimension D.
It is formed smaller. These dimensions B and E restrict dust that is larger than the flow path cross-sectional area of the inner pipe portion 33a from passing through the wide-mouth portion 61a.

As shown in FIGS. 4, 6, and 7, the main lower case 52 is provided with upward ribs 52e that are substantially parallel to the ribs 52b and face the ribs 52b. An air passage 65 extending in the width direction of the suction port main body 22 is provided along the rear side of the dust transfer chamber 58 between the dust transfer chambers 52e. The middle part in the longitudinal direction of the air passage 65 is the vent 3
6 and the upper part of the air passage 65 is connected to the circulating air blowing chamber 56. Therefore, the air discharged from the electric blower 11 and flowing out from the ventilation port 36 flows along the air passage 65 in the width direction of the suction port main body 22 so as to bypass the rear side of the dust transfer chamber 58. Is supplied to and filled in the circulating air blowing chamber 56.

As shown in FIG. 4 to FIG.
Vent portions 66 and 68 are opened on the upper surfaces of both ends in the longitudinal direction of the dust transfer chamber 58 so as to communicate with the rear sides of both ends in the longitudinal direction of the dust transfer chamber 58. Further, on the upper surfaces of both ends in the longitudinal direction of the main case 53, other ventilation portions 67 and 69 formed of through holes are formed adjacent to the front sides of the ventilation portions 66 and 68. These ventilation portions 67 and 69 are opposed to both ends in the longitudinal direction of the communication port 61 as representatively shown in FIG. 5, and consequently communicate with the both ends in the longitudinal direction of the cleaning body housing chamber 57 from above. Is provided.

Furthermore, guide ribs 52f projecting downward at one end of the middle case 53 in the longitudinal direction are formed integrally with one ventilation portion 66, 67 corresponding to the front-rear direction. Guide rib 5 projecting downward at the boundary between the other ventilation portions 68 and 69 corresponding to the direction.
2 g are integrally formed. Guide ribs 52g, 52f
As shown in FIGS. 4 and 5, the lower end is in contact with or close to the longitudinal end of an upwardly directed front edge 62a that makes the dust receiving shelf 62 a gutter shape together with the rib 52b.

The cleaner driving device 25 is accommodated at one longitudinal end of the suction port main body 22. As shown in FIGS. 6 and 7, the cleaning body driving device 25 includes an electric motor 71, a pair of front and rear final gears (not shown) that mesh with each other, and one of the final gears and an output shaft of the electric motor 71 connected to each other. In order to prevent dust from adhering to the final gear and the transmission mechanism, the electric motor 71
A dust-proof case 72 provided so as to cover the output shaft side, and a dust-proof case 7 which is individually connected to the two final gears.
2 and a pair of front and rear joints 73 and 74 (see FIG. 5) provided side by side so as to be exposed on the side surfaces of the two. The pair of final gears and the joints 73 and 74 connected thereto are rotationally driven in directions opposite to each other. The pair of joints 73 and 74 face the inside of the cleaning body housing chamber 57. In the present embodiment, the final gear and the transmission mechanism are formed by a gear train, but are not limited thereto. The cleaning body driving device 25 is provided with the air passage 65.
The air is cooled by being exposed to wind flowing out of the air and reaching the ventilation section 68.

A pair of front and rear bearing support portions (not shown) is provided at the end of the cleaning body accommodating chamber 57 located on the side opposite to the side where the cleaning body drive device 25 is installed.
3 and 74 are provided individually correspondingly. A pair of front and rear rotating cleaning bodies 23 and 24 are detachably housed in the cleaning body housing chamber 57 as described later.

As shown in FIG. 8 and FIG.
3 and 24 are provided with a joint 82 at one end of the cleaning body shaft 81.
At the same time, a bearing 83 for rotatably supporting the cleaning body shaft 81 is mounted on the other end, and a plurality of flexible blades 84 as cleaning elements are mounted between the joint 82 and the bearing 83. Is formed. These rotary cleaning bodies 23 and 24 are attached to the cleaning body accommodating chamber 57 at a position where the tip of the blade 84 passes through the dust removal opening 57a and comes into contact with the surface to be cleaned. The diameters of the rotary cleaning members 23 and 24 are defined by the rotation trajectories R1 and R2 of the longest blade 84.

The rotary cleaning body 23 on the front side has a joint 82 at one end of the rotary cleaning body 23 provided with the cleaning body drive unit 25.
3 and the bearing 83 at the other end is fitted into the front bearing support portion (not shown) of the main lower case 52 from below, so that the cleaning body housing chamber 57 can be inserted. Rotatably mounted on the front of the
It can be removed by the reverse procedure. Similarly, the rear rotary cleaning body 24 is also connected to the rear joint 74 of the cleaning body drive unit 25 by fitting the joint 82 at one end thereof into and out of the rear joint 74 of the cleaning body driving device 25 so as to be insertable and removable. Bearing 83
Is fitted to the rear bearing support portion (not shown) of the main lower case 52 from below, so that the main body lower case 52 is rotatably attached to the rear portion of the cleaning body housing chamber 57, and can be removed by the reverse procedure.

A holding plate 85 (see FIG. 8) for closing the portion corresponding to the end of the cleaning body housing chamber 57 on the bearing support side from the lower side is detachably attached to the main lower case 52. . By this mounting, the front and rear bearing support portions are closed from below, and the joint 82 is prevented from falling off from the support portions.

In the above configuration, the second pipe 42 of the movable portion 32 of the suction port body 8, the passage 35 of the rotating tube 34, the vent 36 of the rotating tube 34, the air passage 65, the circulating air blowing chamber 56, the ventilation portion The dust transfer chambers 66, 68 and the dust transfer chamber 58 communicate with each other in this order, and form a return air passage that guides the air discharged from the electric blower 11 of the cleaner body 1 in the suction opening 8. . Also, the first pipe 41 of the movable part 32
And an inner pipe portion 33a of the rotating base pipe 33 directly communicating with the inner pipe section 33a.
Forms a suction air passage that guides the air sucked into the electric blower 11 of the cleaner body 1 in the suction opening body 8. A front end opening of the inner pipe portion 33a, which is an inlet of the suction air passage, is communicated with the cleaning body accommodating chamber 57 through the dust transfer chamber 58 and the communication port 61 with the transfer chamber 58.

When the suction port 8 having the above-described structure and the air circulation type vacuum cleaner having the same are used for cleaning, the dust suction hose 4 and the dust suction pipe 5 are connected to the cleaner body 1 as shown in FIG.
Are connected in order as shown in FIG. 5, the joint pipe 21 of the suction port 8 is connected to the tip of the dust suction pipe 5, and one of the control switches 17 provided on the handle 15 of the suction hose 4 is closed. When the closing operation is performed, the electric blower 11 built in the cleaner body 1 is operated, and the suction port body 8 is operated.
As the electric motor 71 of the cleaning body driving device 25 incorporated in the cleaning body is driven, the pair of front and rear rotating cleaning bodies 23 and 24 in the cleaning body accommodating chamber 57 move inward and inward, that is, the dust removal opening 57.
In FIG. 3A, the motors are driven to rotate in synchronization with each other (see arrows A and B in FIGS. 3 and 4). The rotation of the rotary cleaning bodies 23 and 24 can be arbitrarily stopped by operating a switch.

On the other hand, the air in the dust transfer chamber 58 of the suction port 8 is sucked by the suction action of the electric blower 11,
The suction air is sucked into the first pipe 41 of the movable part 32 of the joint pipe 21 and the inner pipe part 33a of the rotary base pipe 33 which is directly communicated with the first pipe 41, the dust suction pipe 5, the dust suction hose 4, and the dust suction port 3. The air is sucked into the dust collection chamber via the air path (the path indicated by the solid arrow in FIG. 1). The dust is removed by the dust bag 9 and the suction airflow is discharged from the electric blower 11 as exhaust air. This exhaust air flows through a return air path member (not shown) of the cleaner main body 1, a dust suction port 3, a dust suction hose 4, a dust suction pipe 5, and a suction port body 8, which form a path indicated by a dotted arrow in FIG.
Is returned to.

The exhaust gas returned to the suction port 8 is
The second pipe 42 of the movable portion 32, the passage 35 of the rotating tube 34,
Vent port 36 of rotating pipe 34, air path 65, circulating wind blowout chamber 5
6. After being blown out from the longitudinal ends of the chamber 58 toward the joint pipe 21 through the ventilation sections 66 and 68 into the dust transfer chamber 58, the dust is collected into the cleaner body 1 by the suction described above. Is done. By repeating the above, the air discharged from the electric blower 11 is circulated over the cleaner body 1 and the suction opening 8.

In this case, the circulating air blown into the circulating air blowing chamber 56 while being guided to the air passage 65 through both the inner and outer pipe portions of the joint pipe 21 is supplied to the ventilation portion 66 of the main case 53.
The dust flows into the dust transfer chamber 58 from both ends in the longitudinal direction through 68 and is guided by the guide ribs 52g and 52f in the flow direction to the dust transfer chamber 58 along the longitudinal direction. Thereby, the circulating wind flows in the rear part of the dust transfer chamber 58 in the longitudinal direction, and the inner pipe part 3 which is the suction part of the joint pipe 21 is moved.
It is sucked into 3a.

A part of the air circulating between the cleaner body 1 and the suction opening 8 is separated from the flow of the wind as described above, and the end portions of the ventilation portions 67 and 69 and the communication port 61 immediately below the ventilation portions 67 and 69. Flows into the cleaning body accommodating chamber 57 through the
While flowing in the longitudinal direction, again reaches the dust transfer chamber 58 through the communication port 61, merges with the wind flowing through the chamber 58, and at the position corresponding to the joint pipe 21, the inner pipe portion of the joint pipe 21. It is sucked into 33a.

As described above, the electric blower 1 of the vacuum cleaner main body 1
The air discharged from 1 flows through the return air passage in the suction port body 8 from the return air path of the dust suction hose 4 and the dust suction pipe 5, and is sucked into the suction air path in the suction port body 8. After that, the air is sucked into the electric blower 11 from the dust collection chamber of the cleaner main body 1 through the suction air passage of the dust suction hose 4 and the dust suction pipe 5, and circulates.

Since the cleaning member housing chamber 57 is not included in the main air circulation path, the main circulating air does not flow through the cleaning member housing chamber 57. Therefore, most of the return air introduced into the suction opening body 8 does not flow along the outer peripheral surfaces of the two rotating cleaning bodies 23 and 24 in the cleaning body housing chamber 57, and the cleaning body housing chamber 57 After flowing through the upper dust transfer chamber 58, it is sucked into the inner pipe portion 33 a of the joint pipe 21 and collected by the cleaner body 1.

In the main air circulation, the dust transfer chamber 5
The air introduced into the air inlet 8 from its longitudinal end has energy that originally flows due to the exhaust pressure of the electric blower 11, and also has a smaller flow passage cross-sectional area of the dust transfer chamber 58. Thus, the dust flows in the dust transfer chamber 58 at a high speed.

On the other hand, at the same time as the air circulation, a pair of front and rear rotary cleaning members 23 and 24 are driven to rotate, and the blades 8 are rotated.
The dust on the surface to be cleaned is lifted by 4. in this case,
Since the two rotary cleaning members 23 and 24 are rotationally driven in directions opposite to each other at the dust removal opening 57a,
The dust on the surface to be cleaned is vigorously swept upward through the space between the rotary cleaning bodies 23 and 24. This scraping is performed over the entire length of the rotary cleaning bodies 23 and 24, in other words, over substantially the entire length of the suction opening body 8 in the width direction.

The dust thus scooped up from the surface to be cleaned by the momentum communicates with the communication port 61 directly above the space between the upper peripheral surfaces of the two rotary cleaning bodies 23 and 24 facing each other. Easily pass without any hindrance, hit the oblique guide wall 53a of the main case 53 facing the communication port 61, and are guided to the dust receiving shelf 62 side. In addition, due to the influence of the high-speed wind mainly flowing on the dust receiving shelf 62 in the dust transfer chamber 58 and the influence of the air suction in the inner pipe portion 33a, the dust reaches the dust transfer chamber 58 through the communication port 61. The air is flowing so as to join the high-speed wind.

For this reason, the communication port 6
The dust that has passed through 1 is free to fall directly below and does not return to the cleaning body accommodating chamber 57, but is smoothly moved from the communication port 61 to the dust receiving shelf 62 on the rear side. Can be put on top. Moreover, the leading edge 6 of the dust bin 62
2a, the dust once placed on the dust receiving shelf 62 is prevented from dropping over the leading edge 62a, and the rising leading edge 62a moves the dust receiving shelf 62 through the wind path. Thus, the flow of the high-speed wind flowing thereon can be smoothly guided, and the higher-speed wind can flow on the dust receiving shelf 62.

As described above, the circulating air flows at high speed in the dust transfer chamber 58 to which the dust is supplied from the cleaning body housing chamber 57. Therefore, the dust on the dust receiving shelf 62 and the dust floating in the dust transfer chamber 58 can be transferred to the joint pipe 21 in a high-speed air flow and sucked into the inner pipe portion 33a.

As described above, the front and rear two rotary cleaning members 23, 2
4 cooperate with each other to transfer the dust that has been scraped up to the suction side by high-speed air flowing through a dust transfer chamber 57 that is different from the cleaning body accommodating chamber 57; Of the rotary cleaning members 23 and 24 do not become air path resistance. Therefore, dust transferred by air is generated by the two rotary cleaning bodies 2.
The scraped-up dust hardly gets caught on the pipes 3 and 24, and the scraped-up dust can be smoothly and reliably transferred to and sucked into the inner pipe portion 33a of the joint pipe 21.

Therefore, even if the dust is swept up at the end in the width direction of the suction port body 8 where the suction force is difficult to spread, it is possible to transfer the air to the joint pipe 21 and suck it into the joint pipe 21 as described above. As a result, dust removal performance can be improved.

Further, the suction force acts mainly on the dust transfer chamber 57 through which high-speed air flows, and the lower cleaning body housing chamber 57 communicates with this chamber 57 through the communication port 61 which is a throttle. The influence of the suction force on the air is weak. for that reason,
Dust removal opening 57a of cleaning body housing chamber 57 facing the surface to be cleaned
Can be prevented from being sucked to the surface to be cleaned, the suction opening 8 can be moved lightly on the surface to be cleaned, and the operability is good.

As described above, in the cleaning using the suction port member 8 having the above-described structure and the air circulation type vacuum cleaner having the same, the pair of front and rear rotary cleaning members 23 and 24 cleans the surface to be cleaned. The dust is transferred to a dust transfer chamber 58 located above the cleaning body accommodating chamber 57, and the dust is discharged from the electric blower 11 and substantially completely circulated. The dust in the transfer chamber 58 can be transferred and sucked into the suction air passage, and the surface to be cleaned can be cleaned while the suction port 8 is lightly moved on the surface to be cleaned.

Further, in the first embodiment, as described above, a part of the circulating air is introduced into the cleaning body accommodating chamber 57 and then joined to the airflow flowing through the dust transfer chamber 58 through the communication port 61. Therefore, the rotary cleaning bodies 23 and 24 are excellent in that the dust scooped up from the surface to be cleaned can be easily carried on the dust receiving shelf 62 smoothly, and the dust removing performance can be further improved.

In the above-described dust removal, it is preferable that the flow velocity of the air flowing through the dust transfer chamber 58 be high. This is because a dust receiving shelf 62 is provided between the two chambers 57 and 58 to reduce the width of the communication port 61. Has been realized. In the communication port 61 whose width is thus reduced, only dust smaller than the width can pass toward the dust transfer chamber 58.

However, as described above, the width of the communication port 61 is not uniformly narrow, and has a wide mouth portion 61 a which is partially widened by a notch 63 facing backward in the dust receiving shelf 62. Therefore, relatively large dust such as paper dust scraped up by the two rotary cleaning members 23 and 24 cooperating with each other can be passed through the wide mouth portion 61a. Since the wide mouth portion 61a is provided only in a part of the communication port 61, the speed of the airflow flowing through the dust transfer chamber 58 does not significantly decrease. Therefore, a relatively large dust such as paper waste can be sucked into the joint pipe 21 via the dust transfer chamber 58 while suppressing a decrease in the air velocity flowing to the dust transfer chamber 58.

In this case, the wide mouth portion 61a is
A notch groove 63 of a dust receiving shelf 62 forming a wide mouth portion 61a is formed toward the rear side of the suction mouth main body 22. Therefore, the wide-mouthed portion 61a is formed in the inner pipe portion 33 of the joint pipe 21 that sucks air in the dust transfer chamber 58 and the cleaning body housing chamber 57.
It is located close to the front of a and closer to it. Therefore, the air in the wide mouth portion 61a can be easily sucked into the inner pipe portion 33a of the joint pipe 21.
As the dust suction performance at the position corresponding to the wide mouth portion 61a can be improved, the dust removal performance of relatively large dust can be improved.

Further, the width B and the depth E of the wide mouth portion 61a restrict dust that is larger than the flow passage cross-sectional area of the inner tube portion 33a from passing through the wide mouth portion 61a. Dust that may be larger than the minimum dimension D between the inner surfaces of the portion 33a and that may clog the inner tube portion 33a is formed by the wide-mouth portion 6.
It is possible to prevent the gas from passing through 1a and reaching the inner tube portion 33a.
Therefore, the communication port 61 is narrowed, and as a result,
Despite having a configuration having a dust transfer chamber 58 that is not easy to clean, with relatively large dust removal,
The above-described dust removal operation can be performed while suppressing the possibility that the dust transfer chamber 58 and the inner pipe portion 33a are clogged.

Further, the wide mouth portion 61 is moved from the cleaning body accommodating chamber 57.
a, the velocity of the airflow sucked into the joint pipe 21 through the dust transfer chamber 58 is reduced by the wide mouth portion 61a wider than the other portion of the communication port 61, so that the wind noise caused by the airflow is reduced, and Dust can be removed with noise.

FIGS. 10 to 12 show a second embodiment of the present invention. This embodiment is a non-air circulation type vacuum cleaner G
In addition, an example in which the present invention is applied to a suction port body 111 therefor is shown.

In FIG. 10, reference numeral 112 denotes a cleaner main body which can be moved on a surface to be cleaned by wheels (not shown). A dust suction port 113 provided at a front portion thereof has a flexible dust suction hose (not shown) and a non-flexible hose. One end of a dust-collecting communication pipe having a dust-absorbing dust pipe is detachably fitted and connected to the other end of the connecting pipe, and a suction port body 111 is detachably fitted and connected to the other end of the connecting pipe. . Only the suction air flow is passed through the communication pipe for dust suction. A dust collecting bag (filter) 114 is housed in a dust collecting chamber at the front of the cleaner body 112 so as to be able to be taken in and out, and an electric blower 115 and the like are housed at a blower room at the rear of the cleaner body 112. I have. The air discharged from the electric blower 115 is configured to be discharged to the outside through an exhaust unit 116 provided at the rear of the cleaner body 112.

The suction port body 111 is provided with the suction port body main portion 12.
1, a pair of front and rear rotary cleaning bodies 123 and 124, a joint pipe 1
25, a cleaning element driving device 126, and the like.

The main body 121 of the inlet body is provided in the upper case 1 of the main body.
28 and the main part lower case 129 are connected to each other. The front portion of the main lower case 129 forms a cleaning body housing chamber 131, and the housing chamber 131 has a dust removal opening 131a facing the surface to be cleaned. Further, as shown in FIGS. 10 and 12, a pair of front and rear partition walls 13 substantially parallel to each other and formed of upward ribs are provided on the ceiling wall of the main part lower case 129.
2 and 133 are integrally protruded, and a communication port 135 is provided between the two walls 132 and 133.

The main upper case 129 includes partition walls 132, 1
33, the upper end of the main body upper case 129 and the front and rear partition walls 132, 133, and a space above the cleaning body housing chamber 131.
31 and a dust transfer chamber 136 communicated through a communication port 135.
Are formed. The air passage cross-sectional area of the dust transfer chamber 136 is smaller than the air passage cross-sectional area of the cleaning body housing chamber 131. A part of the ceiling wall is located on the rear partition wall 133 side to partition between the dust transfer chamber 136 and the cleaning body storage chamber 131, and this wall part is used as a dust receiving shelf 139. ing.

As shown in FIG. 12, a notch 139a is provided at the center of the dust receiving shelf 139 in the longitudinal direction, which is located on the extension of the entrance 125a of the joint pipe 125 and is located in front of it. The groove 139a faces the communication port 135, and forms a wide mouth portion 135a at the center in the longitudinal direction of the communication port 135. In FIG. 12, the wide-mouthed portion 135a is drawn with two-dot chained parallel diagonal lines to facilitate distinction from other portions.

The dust transfer chamber 136 and the dust receiving shelf 139 are provided so as to extend substantially the entire width of the suction port main body 121 in the width direction. At least one longitudinal end of the dust transfer chamber 136, for example, both ends, is provided with an air inlet 137 (see FIG. 11). These inlets 137 are provided with suction port bodies 111.
For example, the main part upper case 129
Are open to the upper surfaces of both ends of the housing so that outside air can be sucked in.

Of the pair of front and rear partition walls 132 and 133,
For example, the rear partition wall 133 is provided with an intake opening 138 at a position away from the air inlet 137 along the longitudinal direction of the dust transfer chamber 136, preferably at a substantially central portion of the dust transfer chamber 136 in the longitudinal direction. Have been. Suction port main part 121
At the center in the width direction, an inlet 125a of a joint pipe 125 is sandwiched and attached between the rear portions of upper and lower cases 128 and 129, and the joint pipe 125 communicates with the intake opening 138. The joint pipe 125 connected to the distal end of the communication pipe for dust suction is configured so that air can be sucked into the inside thereof and air can mainly flow therethrough.

Therefore, the suction force generated when the electric blower 115 is operated is reduced by the dust-communicating communication pipe and the joint pipe 1.
The dust spreads to the dust transfer chamber 136 via the air inlet 25 and the intake opening 138, and further spreads from the dust transfer chamber 136 to the cleaning body housing chamber 131 through the communication port 135 narrowed by the dust receiving shelf 139.

Therefore, the outside air sucked into the dust transfer chamber 136 from the air inlet 137 flows through the dust transfer chamber 136 at a high speed, and is sucked into the joint pipe 125 through the suction opening 138. At the same time, the cleaning body housing chamber 13
In a state in which the suction pressure that spreads to the suction chamber 1 is reduced, the air in the storage chamber 131 passes through the communication port 135 and the dust transport chamber 136
And this air merges with the high velocity air flow in the dust transfer chamber 136 and is drawn into the fitting tube 125 through the intake opening 138.

As shown in FIG. 10, one end portions of the front and rear rotary cleaning members 123 and 124 housed in the cleaning body housing chamber 131 so as to substantially fill them are supported by bearings 141 shown in FIG. The other end has a gear 14 meshing with the other.
2, 143 are individually supported. Gears 142, 14
Reference numeral 3 denotes a final gear of the cleaning element driving device 126. The rotation of the cleaning element driving device 126 causes the front and rear rotating cleaning elements 123 and 12 to rotate.
4 are driven to rotate in directions indicated by arrows A and B in FIG. 10 so as to face each other at the dust removal opening 131a.

As shown in FIG. 12, the suction port main body 121
The cleaning element driving device 126 built in the electric motor 14
5, the winding transmission mechanism 146, the final gear 142,
143. The winding transmission mechanism 146 includes a driving toothed pulley 147 connected to the electric motor 145.
And a driven toothed pulley 148 coaxially connected to the rear final gear 143, and a timing belt 149 wound around these pulleys 147 and 148.

Therefore, the front and rear two rotary cleaning members 123 and 124 are driven to rotate inward and inward by the power of the electric motor 145, and the blade 123 as a cleaning element thereof is rotated.
b, 124b removes dust on the surface to be cleaned.
3, 124 can be lifted up.

Also in the second embodiment, the dust swept up from the surface to be cleaned by the two rotating cleaning bodies 123 and 124 that are rotated and driven by the operation of the cleaning body driving device 126 removes the cleaning body. Aside from the chamber 131, the dust transport chamber 136 formed on the upper side is reached, and a part of the chamber falls freely onto a dust receiving shelf 139. Since the outside air is sucked into the dust transfer chamber 136 from which the dust is supplied from the cleaning body housing chamber 131 through the air inlet 137 from a direction other than the surface to be cleaned and flows at a high speed, the high-speed suction is performed. The dust on the dust receiving shelf 139 and the dust floating in the dust transfer chamber 136 in the air flow can be transferred to the intake joint pipe 125 and sucked into the pipe 125.

The dust thus scraped is transferred to the dust transfer chamber 1
Since the air is transferred to the suction side by the high-speed air flowing through the air 36, the two rotary cleaning bodies 123 and 124 do not have an air path resistance in the air transfer of the dust. Therefore, the air-transferred dust hardly interferes with the two rotary cleaning bodies 123 and 124 and is caught, and the scraped-up dust can be smoothly and reliably transferred to the joint pipe 125 and sucked. Therefore, even if dust is swept up at the end in the width direction of the suction opening body 111 where the suction force is difficult to spread, the dust can be sucked by transferring the air as described above. Can be improved.

Further, as described above, as the outside air is sucked, the suction force acting on the lower cleaning body accommodating chamber 131 which is communicated from the joint pipe 125 through the communication port 135 which is a throttle is reduced. It greatly decreases. Therefore, it is possible to prevent the dust removal opening 131a of the cleaning body housing chamber 131 facing the surface to be cleaned from being strongly sucked to the surface to be cleaned, despite the non-air circulation type cleaning. Therefore, the suction port body 11
1 can be moved lightly on the surface to be cleaned, and the operability is good.

Further, the notch groove 13 is formed in the dust receiving shelf 139 described above.
Since the wide opening portion 135a is formed in a part of the communication port 135 by providing the communication port 9a, a relatively large dust such as paper debris can be removed while suppressing a decrease in the air velocity flowing to the dust transfer chamber 136. The dust is sucked into the joint pipe 125 via the 136, and the dust removal performance can be improved. In addition, the wide mouth portion 135a is connected to the dust transfer chamber 136 and the cleaning body housing chamber 131.
Is located close to the front of the joint pipe 125 that sucks the air, and is provided so as to be closer to the joint pipe 125. As a result, the dust suction performance at the position corresponding to the wide-mouth portion 135a can be improved, so that relatively large dust is generated. Dust removal performance can be improved, and as the speed of air passing through the wide-opening portion 135a decreases, wind noise can be reduced, and dust can be sucked in and removed with low noise.

The present invention also provides an air inlet 1 for introducing outside air.
37 can be omitted, and the rest can be implemented as the same configuration as the second embodiment. In this case, the joint pipe 1
25, the cleaning body housing chamber 1
The air sucked up from 31 flows into the dust transfer chamber 136. The flowing air flows through the dust transfer chamber 136 without interfering with the front and rear rotary cleaning bodies 123 and 124.
Therefore, the dust swept up by the rotary cleaning members 123 and 124 can be smoothly transferred to the dust transfer chamber 136 by air and sucked into the joint pipe 125, thereby solving the problem of the present invention.

In the present invention, as means for rotating the two rotary cleaning elements, in addition to those exemplified in the above-described embodiments, a part or all of the suction air flow or the circulated air flow may be blown. Two rotating cleaning bodies can be rotated by using a rotated turbine,
By blowing a part or all of the suction airflow or the circulated airflow to at least one of the two rotating cleaning bodies, the two rotating cleaning bodies can also be rotated. In the case where the cleaning element driving device is used, the transmission mechanism may be a gear train, a winding transmission unit using a timing belt, or a transmission mechanism formed by a combination thereof. .

[0101]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, the dust swept up by the two rotary cleaning bodies through the communication port into the dust transfer chamber above the cleaning body housing chamber is transferred to the dust receiving shelf between the two chambers. Since the dust is transferred to the joint pipe by the flowing air and sucked while receiving, there is little interference between the dust that is swept up and transferred and the rotary cleaning body, and the widthwise end of the main part of the suction port body But dust is easy to remove. In addition, since the communication port between the two chambers has a wide-opened portion in which a part of the width is widened,
A relatively large dust such as paper waste can be sucked into the joint pipe via the dust transfer chamber while suppressing a decrease in the air velocity flowing into the dust transfer chamber. Therefore, it is possible to provide a suction port body with improved dust removal performance.

According to the second and third aspects of the present invention, the dust suction performance at the position corresponding to the wide opening portion of the communication port is high, and the relatively large dust removal performance can be improved.

According to the fourth aspect of the present invention, dust larger than the minimum dimension between the inner surfaces opposed to each other across the axis of the inlet portion of the joint pipe passes through the wide mouth portion of the communication port and reaches the dust portion. That is, the possibility of occurrence of such a situation can be suppressed.

According to the fifth and sixth aspects of the present invention, there is almost no interference between the dust that is swept up from the surface to be cleaned by the two front and rear rotary cleaning bodies and passes through the communication port to the dust transfer chamber and the rotary cleaning bodies. In addition, the dust that has been scooped up by the dust transfer chamber can be smoothly transferred to the joint pipe by the airflow flowing through the dust transfer chamber and sucked while being received by the dust receiving shelf provided between the two chambers, whereby the suction can be performed. A suction port body that can easily remove dust even at the widthwise end of the main body of the port body, and can also suck relatively large dust such as paper waste from the dust transfer chamber into the joint pipe through the wide port portion of the communication port. Therefore, it is possible to provide a non-air circulation type or air circulation type vacuum cleaner having improved dust removal performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an air circulation type vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a suction port provided in the electric vacuum cleaner shown in FIG. 1;

FIG. 3 is a vertical sectional side view showing the suction port body of FIG. 2;

FIG. 4 is a vertical sectional side view showing a part of the suction port body of FIG. 2;

FIG. 5 is a perspective view showing one end of the suction port body of FIG. 2 in an inverted state.

FIG. 6 is a schematic plan view showing the suction port body of FIG. 2 with its main part upper cover removed.

FIG. 7 is a schematic plan view showing a part of the suction opening body of FIG. 2 in a state where a main part upper cover and a main part middle cover are removed.

FIG. 8 is a bottom view showing the suction port body of FIG. 2;

FIG. 9 is a plan view showing a rotary cleaning body provided in the suction port body of FIG. 2;

FIG. 10 is a vertical sectional side view showing a suction opening of an air circulation type vacuum cleaner according to a second embodiment of the present invention.

FIG. 11 is a plan view showing the suction port body of FIG. 10;

FIG. 12 is a schematic plan view showing the suction port body of FIG. 10 in a state where a part of the suction port body is removed with its upper cover removed.

[Explanation of symbols]

 A ... air circulation type vacuum cleaner 1 ... cleaner body 8 ... suction body 9 ... dust collection bag (filter) 11 ... electric blower 21 ... joint pipe 22 ... suction port body main part 23 ... front side rotary cleaning body 24 ... Rear rotating cleaning body 25 Cleaning body driving device 33a Inner pipe part (entrance part) of joint pipe C Central axis of inner pipe part D Minimum dimension between inner surfaces of inner pipe part 51 Main part upper case 52 ... Main part lower case 53 ... Main part middle case 53a ... Guide wall of main part middle case 57 ... Cleaning body accommodating chamber 57a ... Dust removal opening 58 ... Dust transfer chamber 61 ... Communication port 61a ... Wide opening of communication port 62 ... Dust Receiving shelf 63: Notch groove B: Width of notch groove E: Depth of notch groove 65: Air path 66, 68 ... Ventilation part (air inlet) 81: Cleaning body shaft G: Non-air circulation type vacuum cleaner 111: suction port body 112: vacuum cleaner body 114: dust collection bag (filter) 15: Electric blower 121: Suction port main part 123, 124 ... Rotary cleaning body 123a, 124a ... Cleaning body shaft 125 ... Joint pipe 125a ... Joint pipe inlet 126 ... Cleaning body driving device 131 ... Cleaning body storage chamber 131a ... Dust removal opening 135 ... Communication port 135a ... Wide opening portion of communication port 136 ... Dust transfer chamber 137 ... Air introduction port 139 ... Dust receiving shelf 139a ... Notch groove

Claims (6)

[Claims] 1. A cleaning body storage chamber having a dust removal opening facing a surface to be cleaned, a dust transfer chamber extending above the storage chamber in the same direction as the direction in which the cleaning body storage chamber extends, and both chambers. A suction port provided on the cleaning body housing chamber and partially widened, and a dust receiving shelf provided between the dust transfer chamber and the cleaning body housing chamber. A main body, a joint pipe connected to the suction port main body in communication with the dust transfer chamber, and a suction pipe for sucking an airflow flowing in the dust transfer chamber in a longitudinal direction thereof, and housed side by side in the cleaning body housing chamber And a rotary cleaning body including two front and rear rotating cleaning bodies. 2. The suction port body according to claim 1, wherein a wide mouth portion in which the width of the communication port is widened is provided on an extension of the joint pipe and in front thereof. 3. The dust receiving shelf, wherein a notch groove facing a wide mouth portion where the width of the communication port is widened is provided toward the rear side of the main part of the suction mouth body. Or the suction opening body of 2. 4. The width along the width direction of the main part of the suction port body of the wide mouth portion where the width of the communication port is widened is set to be smaller than the minimum dimension between the inner surfaces opposed to each other across the axis of the inlet portion of the joint pipe. The suction opening according to any one of claims 1 to 3, wherein the suction opening is made smaller. 5. An operation of an electric blower in the cleaner body, wherein dust on a surface to be cleaned is sucked together with air from a dust removal opening of a suction port body connected to a dust collecting chamber of the cleaner body,
In a vacuum cleaner that catches the sucked dust through a filter in the dust collection chamber, the suction port body may have a suction port.
An electric vacuum cleaner, wherein the suction port according to any one of 4 is used. 6. A dust collecting surface of a vacuum cleaner, which incorporates an electric blower, takes in dust on a surface to be cleaned through a dust collecting opening of a suction opening body connected to a dust collecting chamber, and transfers the taken dust into the dust collecting chamber. The air exhausted from the electric blower after passing through the filter and being captured through the filter is returned to the suction port body, and the discharged air is cleaned while circulating over the cleaner body and the suction port body. An electric vacuum cleaner, wherein the suction port body according to any one of claims 1 to 4 is used for the suction port body.